Question
The ratio of length to breadth of a rectangle is 8:5.
When the length and breadth of the rectangle is increased by 22% and decreased by 30% respectively, then its perimeter becomes 663 cm. Find the original area (in cm2) of the rectangle.Solution
Let the original length and breadth of the rectangle be 8x cm and 5x cm, respectively According to the question, 2 Ă— {(1.22 Ă— 8x) + (0.7 Ă— 5x)} = 663 Or, 9.76x + 3.5x = 331.5 Or, x = 331.5/13.26 = 25 Therefore, original area of the rectangle = 8x Ă— 5x = 40x2 = 25000 cm2
In which year did India first win a gold medal at the Olympic Games?
Which entity introduced the Risk Intelligence Decisioning Platform alongside the EVOK 3.0 payment platform?
To form and promote new 10,000 FPO’s in the country, how much Rs allocation was passed in the union budget 2021-22?
The Consumer mobile business of Tata Teleservices will be taken over by:
Which aircraft was used in the trials of the Gaurav Long-Range Glide Bomb (LRGB)?
In which country is Dassault Aviation, the manufacturer of the Rafale fighter aircraft, based?
In which of the following states Ghumura is a folk dance?
Which of the following denotes a plateau phase in population growth?
Companies raise ECB because they get subsidy for raising capital from abroadÂ
The headquarters of the Indian Space Research Organisation (ISRO) is in:
Relevant for Exams:
